<!DOCTYPE html>
<html lang="zh">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>登录</title>
  <style>
    body {
      display: flex;
      justify-content: center;
      margin-top: 200px;
      background-color: #212121;
    }
    .form {
      display: flex;
      flex-direction: column;
      gap: 10px;
      padding-left: 5vw;
      padding-right: 5vw;
      padding-bottom: 4em;
      background-color: #171717;
      border-radius: 20px;
    }
    #heading {
      text-align: center;
      margin: 2em;
      color: rgb(0, 255, 200);
      font-size: 1.2em;
    }
    .field {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5em;
      border-radius: 25px;
      padding: 0.6em;
      border: none;
      outline: none;
      color: white;
      background-color: #171717;
      box-shadow: inset 2px 5px 10px rgb(5, 5, 5);
    }
    .input-icon {
      height: 1.3em;
      width: 1.3em;
      fill: rgb(0, 255, 200);
    }
    .input-field {
      background: none;
      border: none;
      outline: none;
      width: 100%;
      color: rgb(0, 255, 200);
      padding-left: 2em;
    }
    .input-field:focus {
      outline: none;
      border: 2px solid rgb(0, 255, 200);
    }
    .form .btn {
      display: flex;
      justify-content: center;
      flex-direction: row;
      margin-top: 2.5em;
    }
    .button1 {
      padding: 0.5em;
      padding-left: 1.1em;
      padding-right: 1.1em;
      border-radius: 5px;
      margin-right: 0.5em;
      border: none;
      outline: none;
      transition: .4s ease-in-out;
      background-image: linear-gradient(163deg, #00ff75 0%, #3700ff 100%);
      color: rgb(0, 0, 0);
    }
    .button1:hover {
      background-image: linear-gradient(163deg, #00642f 0%, #13034b 100%);
      color: rgb(0, 255, 200);
    }
    .button2 {
      padding: 0.5em;
      padding-left: 2.3em;
      padding-right: 2.3em;
      border-radius: 5px;
      border: none;
      outline: none;
      transition: .4s ease-in-out;
      background-image: linear-gradient(163deg, #00ff75 0%, #3700ff 100%);
      color: rgb(0, 0, 0);
    }
    .button2:hover {
      background-image: linear-gradient(163deg, #00642f 0%, #13034b 100%);
      color: rgb(0, 255, 200);
    }
    .button3 {
      margin-bottom: 3em;
      padding: 0.5em;
      border-radius: 5px;
      border: none;
      outline: none;
      transition: .4s ease-in-out;
      background-image: linear-gradient(163deg, #00ff75 0%, #3700ff 100%);
      color: rgb(0, 0, 0);
    }
    .button3:hover {
      background-image: linear-gradient(163deg, #a00000fa 0%, #d10050 100%);
      color: rgb(255, 255, 255);
    }
    .card {
      background-image: linear-gradient(163deg, #00ff75 0%, #3700ff 100%);
      border-radius: 22px;
      transition: all .3s;
    }
    .card2 {
      border-radius: 0;
      transition: all .2s;
    }
    .card2:hover {
      transform: scale(0.98);
      border-radius: 20px;
    }
    .card:hover {
      box-shadow: 0px 0px 30px 1px rgba(0, 255, 117, 0.30);
    }
  </style>
</head>
<body>
  <div class="card">
    <div class="card2">
      <form class="form">
        <p id="heading">登录</p>
        <div class="field">
          <label for="username">
            <svg viewBox="0 0 16 16" fill="currentColor" height="16" width="16" xmlns="http://www.w3.org/2000/svg" class="input-icon">
              <path d="M13.106 7.222c0-2.967-2.249-5.032-5.482-5.032-3.35 0-5.646 2.318-5.646 5.702 0 3.493 2.235 5.708 5.762 5.708.862 0 1.689-.123 2.304-.335v-.862c-.43.199-1.354.328-2.29.328-2.926 0-4.813-1.88-4.813-4.798 0-2.844 1.921-4.881 4.594-4.881 2.735 0 4.608 1.688 4.608 4.156 0 1.682-.554 2.769-1.416 2.769-.492 0-.772-.28-.772-.76V5.206H8.923v.834h-.11c-.266-.595-.881-.964-1.6-.964-1.4 0-2.378 1.162-2.378 2.823 0 1.737.957 2.906 2.379 2.906.8 0 1.415-.39 1.709-1.087h.11c.081.67.703 1.148 1.503 1.148 1.572 0 2.57-1.415 2.57-3.643zm-7.177.704c0-1.197.54-1.907 1.456-1.907.93 0 1.524.738 1.524 1.907S8.308 9.84 7.371 9.84c-.895 0-1.442-.725-1.442-1.914z"></path>
            </svg>
            <input type="text" id="username" class="input-field" placeholder="Username" aria-label="Username" autocomplete="off">
          </label>
        </div>
        <div class="field">
          <label for="password">
            <svg viewBox="0 0 16 16" fill="currentColor" height="16" width="16" xmlns="http://www.w3.org/2000/svg" class="input-icon">
              <path d="M8 1a2 2 0 0 1 2 2v4H6V3a2 2 0 0 1 2-2zm3 6V3a3 3 0 0 0-6 0v4a2 2 0 0 0-2 2v5a2 2 0 0 0 2 2h6a2 2 0 0 0 2-2V9a2 2 0 0 0-2-2z"></path>
            </svg>
            <input type="password" id="password" class="input-field" placeholder="Password" aria-label="Password">
          </label>
        </div>
        <div class="btn">
          <button class="button1" type="submit">Login</button>
          <button class="button2" type="button">Sign Up</button>
        </div>
        <button class="button3" type="button">Forgot Password</button>
      </form>
    </div>
  </div>
  <script>
    document.querySelector('.form').addEventListener('submit', function(e) {
      var username = document.querySelector('#username');
      var password = document.querySelector('#password');
      if (!username.value || !password.value) {
        e.preventDefault();
        alert('Please fill in both fields.');
      }
    });
  </script>
</body>
</html>
